火灾下铝合金艇体结构热力耦合响应研究
Thermal-mechanical coupling response of aluminum alloy hull structure under fire
李陈峰 1毛佳寅2
作者信息
- 1. 哈尔滨工程大学船舶工程学院,黑龙江哈尔滨 150001;教育部船舶与海洋工程技术国际合作联合实验室,黑龙江哈尔滨 150001
- 2. 哈尔滨工程大学船舶工程学院,黑龙江哈尔滨 150001
- 折叠
摘要
为了开展气垫船的铝合金艇体结构在火灾高温作用场下的甲板结构热力耦合响应研究,基于大涡模拟方法FDS(Fire Dynamic Solution)构建艇体火灾场景模型,获取热释放功率不同的油池火灾下的高温作用场特性,获得结构表面的单位热通量数据并通过自编温度载荷映射程序并采用顺序热力耦合计算方法开展火灾场景下铝合金结构热力耦合响应的研究,分析火灾下艇体的甲板结构的失效模式与舱段的极限承载能力变化,为后续船体的铝合金结构轻量化设计与抗火设计方案提供技术依据.
Abstract
To investigate the thermal-structural coupling response of the deck structure of an air-cushion vehicle under fire and high-temperature conditions,a fire scenario model of the vehicle was constructed based on the Large Eddy Simula-tion method FDS(Fire Dynamic Solution).The high-temperature field characteristics of oil pool fires with different heat release rates were obtained.The thermal-structural coupling response of the ship structure under fire scenarios was studied by using the unit heat flux data of the structure surface with a self-developed temperature load mapping program and a sequential thermal-structural coupling calculation method.Failure modes of the deck structure and changes in the ultimate bearing capacity of the compartments of the air-cushion vehicle were analyzed.The results provide technical support for the sub-sequent light-weight design and fire-resistant design schemes of the aluminum alloy structure of the hull.
关键词
铝合金艇体结构/大涡模拟/温度场特性/结构热力耦合响应Key words
aluminum alloy hull structure/large eddy simulation/temperature field characteristics/thermal-mech-anical coupling response of structure引用本文复制引用
基金项目
黑龙江省自然科学基金资助项目(LH2020E078)
国家自然科学基金资助项目(52171305)
国家自然科学基金资助项目(52101305)
出版年
2024
NETL
NSTL
万方数据